Perhaps this can help someone else.
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Additionally, I found a Dell Latitude X1 in my "I don't use these but don't want to throw them out" stuff. It's running 2 copies of the slush proxy (one per cube) on 13 watts when the screen is blanked. It's running Windows XP, and peaking at about 70% utilization on the cpu.
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I've been doing some experimentation, and I've found that when I run my proxies on a Dell T3400 (core2 quad, 8GB ram) I get about 10% better hash rates than when I run on the X1 laptop. The difference in power consumption is probably significant; next time I have the cubes down for any reason I'll put a watt meter on it and see.
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